font-size = 37.5
computedNum($num)
  ($num/font-size) * 1rem
border-1px-bottom($color)
  position relative
  &:after
    position absolute
    width 100%
    left 0
    bottom 0
    border-top 1px solid $color
    content ''
border-1px-top($color)
  position relative
  &:after
    position absolute
    width 100%
    left 0
    top 0
    border-top 1px solid $color
    content ''
border-1px-all($color)
  position relative
  &:after
    position absolute
    top 0
    left 0
    width 200%
    height 200%
    border 1px solid $color
    content ''
bg-img($url)
  background-image: url($url + "@2.png")
  @media(-webkit-min-device-pixel-ratio:3),(min-device-pixel-ratio:3)
    background-image:url($url + "@3.png")
.split-line-wrapper
  height computedNum(7)
  background rgb(245,245,245)

